
Bodybuilding is about developing muscle and improving physique through weight training, aerobic exercise, and dietary changes. A bodybuilding diet is designed to build muscle and reduce body fat. It involves eating a wide variety of nutrient-rich foods across different food groups. The number of calories consumed and the amount of exercise done determine whether weight will be gained or lost. Bodybuilding diets usually involve bulking and cutting phases, during which calorie intake fluctuates while the macronutrient ratio remains stable. To build muscle, a balance of 30% protein, 30% healthy fats, and 40% carbohydrates is recommended. It is also important to stay hydrated and limit processed foods.
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What You'll Learn
- Caloric intake: Eat more calories than expended to gain weight, and vice versa to lose weight
- Macronutrients: Consume a balance of protein, healthy fats, and carbohydrates
- Meal frequency: Multiple small meals and snacks throughout the day can help fuel muscle growth
- Food choices: Opt for nutrient-dense, protein-rich foods and limit alcohol, sugar, and deep-fried foods
- Supplements: Consider protein supplements or shakes to meet daily protein goals

Caloric intake: Eat more calories than expended to gain weight, and vice versa to lose weight
Caloric intake is a key factor in bodybuilding, with different goals requiring different approaches to calorie consumption. If you want to build muscle, it is crucial to ensure you are consuming enough calories. Dana Ellis Hunnes, PhD, MPH, RD, senior clinical dietitian at UCLA Medical Center, emphasises that "without enough calories, [...] you will not gain muscle, and you will likely lose it."
To gain weight, you need to consume more calories than you expend. This is known as a caloric surplus. A consistent surplus of around 500 calories is recommended to establish a sustainable pace of weight gain. During the bulking phase, bodybuilders aim to consume 10-20% more calories than required to maintain their current weight. For example, if your maintenance intake is 2,000 calories, you would increase it to 2,300 calories to bulk up. This phase focuses on building muscle mass through a high-calorie, protein-rich diet and intense weight training.
On the other hand, if your goal is to lose weight, you need to create a caloric deficit by consuming fewer calories than you expend. A deficit of around 200-700 calories is recommended for a steady and healthy weight loss journey. The cutting phase, which follows the bulking phase, aims to reduce body fat while preserving muscle mass. During this phase, calorie intake is approximately 10-20% below the number needed for weight maintenance. For example, if your maintenance intake is 2,000 calories, you would reduce it to 1,700 calories during the cutting phase.
It is important to note that individual calorie needs may vary, and factors such as body composition, activity levels, and metabolism play a role in determining the exact caloric intake for bodybuilding goals. Additionally, while calorie intake is crucial, it is equally important to focus on consuming nutrient-dense foods, including lean protein sources, healthy fats, and complex carbohydrates.
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Macronutrients: Consume a balance of protein, healthy fats, and carbohydrates
To build muscle, it is recommended that bodybuilders consume a diet that is roughly 30% protein, 30% healthy fats, and 40% carbohydrates. This is because protein is the building block of muscle and is the key nutrient for muscle growth. For the average person, it is recommended to consume at least 0.8 grams of protein per kilogram of body weight per day. However, during the bulking phase, bodybuilders may need to consume more protein to support muscle growth.
Healthy fats, such as olive oil, nuts, and avocados, should also be included in a bodybuilder's diet. While fats are typically considered unhealthy, they have structural and metabolic functions and are a necessary part of the human diet. It is recommended to limit saturated fat intake to less than 10% of calories consumed per day and to replace saturated fats with monounsaturated and polyunsaturated fats, which are considered healthier.
Carbohydrates are the third macronutrient group that bodybuilders should focus on. While too many carbohydrates in the form of sugar can have negative health effects, complex carbohydrates from vegetables, fruits, whole grains, and legumes are beneficial and necessary for the human body. Carbohydrates provide the body with the fuel it needs to function properly.
In addition to consuming a balanced ratio of macronutrients, bodybuilders should also focus on eating nutrient-dense foods. This means including a variety of foods from different food groups to ensure that all nutritional needs are met. Alcohol, added sugars, and deep-fried foods should be limited or avoided, as they can negatively impact health and hinder progress.
It is important to note that the exact ratio of macronutrients and the number of calories a bodybuilder should consume will vary depending on their individual goals, body composition, and current phase of training. Consulting with a doctor, certified fitness instructor, or dietitian can help determine the optimal diet for an individual's specific needs.
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Meal frequency: Multiple small meals and snacks throughout the day can help fuel muscle growth
Meal timing and frequency are crucial factors in maximising muscle growth, recovery, and overall performance. Eating multiple small meals and snacks throughout the day helps maintain an anabolic state (muscle-building) and prevents catabolism (muscle breakdown). This strategy ensures a constant supply of nutrients to the muscles.
A common approach is to consume 5-7 smaller meals or snacks evenly spaced throughout the day. This helps maintain steady energy levels and provides continuous nourishment to the muscles. It is important to note that the body has a limited capacity for muscle protein synthesis after a single meal, known as the muscle-full effect. Therefore, dividing protein intake over multiple meals is essential for maximum muscle growth.
Protein intake should be tailored to an individual's body weight, with specific amounts of protein per kilogram of body weight recommended for optimal muscle growth and maintenance. Consuming protein supplements around workout periods can enhance muscle synthesis, leading to improved muscle mass development and strength.
Additionally, the timing of meals can impact the body's ability to synthesize protein, replenish glycogen stores, and utilize nutrients efficiently. By eating at specific times, individuals can take advantage of the body's natural anabolic processes, optimizing muscle growth and minimizing breakdown.
During the bulking phase, bodybuilders aim to consume 10-20% more calories to support muscle growth. It is recommended to focus on consuming more calories with balanced macronutrients, ensuring a caloric surplus. During sleep, the body enters a fasted state, which can lead to muscle breakdown. Consuming slow-digesting protein before bed can stimulate muscle protein synthesis and provide a steady stream of amino acids throughout the night.
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Food choices: Opt for nutrient-dense, protein-rich foods and limit alcohol, sugar, and deep-fried foods
Bodybuilding requires intense commitment to both diet and exercise. A bodybuilder's diet should include nutrient-dense, protein-rich foods. Nutrient-rich foods from different food groups are essential to meeting your nutritional needs and lowering your risk of chronic diseases.
When it comes to bodybuilding, it's important to eat a lot of food to get enough protein, carbohydrates, and fats. Lean proteins like eggs, chicken, and fish are recommended, as well as healthy fats like avocado, nuts, and olive oil. Complex carbohydrates such as rice provide the energy needed for workouts and aid in muscle recovery.
It is also important to limit or avoid certain foods that can interfere with muscle growth and harm your health. Alcohol is best enjoyed in moderation, but it can negatively impact the body's ability to metabolize and utilize nutrients. It can also cause dehydration, which is detrimental to muscular power. Added sugars, processed foods, and deep-fried foods are also best avoided as they can contribute to weight gain and hinder muscle growth. These foods are often high in unhealthy fats, calories, and salt, which can cause water retention and bloating.
In addition to the above, it is worth noting that everyone is unique, and some foods may affect different people differently. It is always a good idea to consult a doctor, certified fitness instructor, or dietitian for professional guidance on your diet and caloric intake.
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Supplements: Consider protein supplements or shakes to meet daily protein goals
When it comes to bodybuilding, protein is essential for muscle growth and repair. While it is possible to meet your protein goals through diet alone, some individuals may find it challenging to do so, especially if they are vegan or vegetarian, recovering from an injury, or starting a new workout programme. In such cases, protein supplements or shakes can be a convenient way to boost protein intake and meet daily goals.
Protein shakes are drinks made with protein powder, which typically comes from dairy, eggs, or plants. They are available in various flavours and can be mixed with water, milk, or another liquid, or purchased in ready-to-drink form. A serving of most protein shakes provides between 10 and 30 grams of protein. It is important to note that the amount of protein you need will depend on your body weight, the intensity of your workouts, and your fitness goals.
For example, the recommended daily protein intake for healthy individuals is about 0.8 grams per kilogram of body weight. However, athletes may require up to 1.3-1.8 grams per kilogram of body weight, with the higher end of this range being more suitable for strength-based workouts like bodybuilding. Additionally, the American College of Sports Medicine and the Academy of Nutrition and Dietetics recommend up to 2.0 grams per kilogram of weight for ultra-endurance athletes.
Before taking any supplements, it is advisable to consult a doctor or nutritionist. It is also important to be aware that the supplement industry is not as strictly regulated as pharmaceuticals. Therefore, it is recommended to look for supplements that are verified by third-party testing agencies, such as NSF International or Informed Choice, to ensure the safety and quality of the product.
When choosing a protein shake, check the label for protein content and additives. Some shakes may contain added sugar, artificial flavourings, vitamins, or minerals. You can also get creative by adding ingredients to your shake to boost its protein content, such as milk, Greek yoghurt, or plant-based alternatives.
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Frequently asked questions
The goal of a bodybuilding diet is to build muscle and reduce body fat.
A bodybuilder's diet should include nutrient-dense foods and plenty of protein. You should limit alcohol, added sugars, and deep-fried foods.
It is more effective to eat multiple small meals and healthy snacks throughout the day to fuel your body and keep your blood sugar levels under control.
Good sources of protein include lean meats, chicken breast, tuna, salmon, tilapia, swordfish, cod, eggs, and dairy products such as cottage cheese and yoghurt.
The number of calories you eat depends on your goals. If you want to gain weight and build muscle, you should eat more calories than you expend each day. If you want to lose weight, you should eat fewer calories than you expend.











































